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After nearly seven years of doing anything but music, Justin Timberlake’s second album of the year is currently out and available for your listening pleasure. Like its predecessor, The 20/20 Experience 2 of 2 is produced in full by old friend and frequent partner, Timbaland, the man responsible for helping to bring sexy back and convincing us that a boy band past and successful solo artistry are not mutually exclusive.

Timbaland has had a large hand in JT’s solo career, crafting the next-level beats on FutureSex/LoveSounds that were unlike anything from the former Disney star’s group or solo repertoire. But Timberlake’s recordings are simply the latest project for Timbo, who’s been crucial to the development and success of a acts like Aaliyah, Missy Elliott, and Jay Z over the years. And together, Timbaland and Timberlake are just one of the most enjoyable musical tag teams on our list, which features artists and producers who can’t seem to stop working together (or making us get up and dance).

Check out our selections of powerful partnerships in music above, and try and figure out how Rick Rubin has found time to sleep in the last 20 years.